This is bob from haixing wedge wire company.We are a manufacturer of stainless steel well point screen in china.The well point screen for dewatering is an incorporate.These incorporate a self Jetting head with a non-return ball valve, a stainless steel slotted filter screen, a G.I inner drain pipe and a top coupling which threads to standard 1 ½" (40 mm) riser pipe. The serations on the jet head render penetration, even through hard grounds, easy. Specially designed slots of stainless steel screen, allows maximum water flow with minimum pressure drop and prevents passage of even fine material. The screen eliminates clogging due to corrosion or deterioration due to chemical action. It has a reverse self cleaning design to void choking.If you have interest in our stianless steel well point screen,please feel free to contact us.